it forms XeOF . 2XeF + SiO 2XeOF + SiF C → When the reaction is continued the following reaction takes place. 2XeOF + SiO 2XeO F + SiF 2XeO F + SiO 2XeO + SiF On hydrolysis with water vapour XeF gives XeO XeF + 3H O XeO + 6HF When XeF reacts with . M NaOH, sodium per xenate is obtained.
2XeF + 16NaOH Na XeO + Xe + O + 12NaF + 8H O Sodium per xenate is very much known for its strong oxidizing property. For example, it oxidises manganese (II) ion into permanganate ion even in the absence of the catalyst. 5XeO + 2Mn + 14H 2MnO + 5XeO + 7H O + XII XII - - - - Xenon reacts with PtF and gave an orange yellow solid [XePtF ] and this is insoluble in CCl . Xenon difluoride forms addition compounds XeF .2SbF and XeF .2TaF .
Xenon hexa fluorides forms compound with boron and alkali metals. Eg : XeF .BF , XeF MF, M-alkali metals. There is some evidence for existence of xenon dichloride XeCl . Krypton form krypton difluoride when an electric discharge is passed through Kr and fluorine at ° C or when gases are irradiated with SbF it forms KrF .2SbF .
Table . Structures of compounds of Xenon: Compound Hybridisation Shape / Structure XeF sp d Linear XeF sp d Square planar XeF sp d Distorted octahedron XeOF sp d T Shaped XeOF sp d Square pyramidal XeO sp Pyramidal Uses of noble gases: The inertness of noble gases is an important feature of their practical uses. Helium: . Helium and oxygen mixture is used by divers in place of air oxygen mixture.
This prevents the painful dangerous condition called bends. . Helium is used to provide inert atmosphere in electric arc welding of metals . Helium